students will able to the applications where SFEE (Steady Flow Engery Equation) is to be used

1. Aldel Education Trust’s
ST. JOHN COLLEGE OF ENGINEERING AND MANAGEMENT, PALGHAR
(ST. JOHN POLYTECHNIC)
DEPARTMENT OF MECHANICAL ENGINEERING
SUB: THERMAL ENGINEERING (TEN)
22337
TOPIC:APPLICATION OF FIRST LAW OF
THERMODYNAMICS
PREPARED BY:-
Prof. Pranit Mehata
Lecturer, SJCEM
7972064172

2. STEADY FLOW
The rate at which the fluid flows through a machine or piece of
apparatus is constant. This type of flow is called steady flow.
Assumptions
The mass flow through the system remains constant.
Fluid is uniform in composition.
The only interaction between the system and surroundings are work
and heat.
The state of fluid at any point remains constant with time.
In the analysis only potential, kinetic and flow energies are
considered.

3. STEADY FLOW ENERGY EQUTAION
(SFEE)
ℎ1 +
𝐶1
2
2
+ 𝑄 = ℎ2 +
𝐶2
2
2
+ 𝑊

4. APPLICATION OF SFEE
Boiler
Nozzle
Turbine
Compressor
Condenser
SFEE APPLIES TO

5. SFEE TO BOILER
A boiler transfers heat to the incoming water and generates the steam.
For this system,
∆𝑍 = 0, ∆
𝐶2
2
= 0, 𝑊 = 0
Applying SFEE to the system,
ℎ1 +
𝐶1
2
2
+ 𝑄 = ℎ2 +
𝐶2
2
2
+ 𝑊
Hence,
𝒉𝟏+Q= 𝒉𝟐

6. SFEE TO TURBINE
For this system,
∆𝑍 = 0, ∆
𝐶2
2
= 0, Q= 0
Applying SFEE to the system,
ℎ1 +
𝐶1
2
2
+ 𝑄 = ℎ2 +
𝐶2
2
2
+ 𝑊
Hence,
W= 𝒉𝟏 − 𝒉𝟐

7. SFEE TO COMPRESSOR
For this system,
∆𝑍 = 0, ∆
𝐶2
2
= 0
Applying SFEE to the system,
ℎ1 +
𝐶1
2
2
+ 𝑄 = ℎ2 +
𝐶2
2
2
+ 𝑊
Hence,
𝒉𝟏 − 𝑸 = 𝒉𝟐 − 𝑾
 As work is done on the system W
is negative and Heat is transferred
by the system Q is negative

8. SFEE TO NOZZLE
For this system,
∆𝑍 = 0, W= 0, Q=0
Applying SFEE to the system,
ℎ1 +
𝐶1
2
2
+ 𝑄 = ℎ2 +
𝐶2
2
2
+ 𝑊
Hence,
𝑪𝟐 = 𝑪𝟏
𝟐
+ 𝟐(𝒉𝟏 − 𝒉𝟐)

9. SFEE TO CONDENSER
For this system,
∆𝑍 = 0, ∆
𝐶2
2
= 0, 𝑊 = 0
Applying SFEE to the system,
ℎ1 +
𝐶1
2
2
+ 𝑄 = ℎ2 +
𝐶2
2
2
+ 𝑊
Hence,
𝒉𝟏+Q= 𝒉𝟐

10. THANK YOU

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